Function change_victim

mysys/waiting_threads.c:671–683

helper function to change the victim, according to the weight */

  helper function to change the victim, according to the weight
*/
static void change_victim(WT_THD* found, struct deadlock_arg *arg)
{
  if (found->weight < arg->victim->weight)
  {
    if (arg->victim != arg->thd)
    {
      rc_unlock(arg->victim->waiting_for); /* release the previous victim */
      DBUG_ASSERT(arg->last_locked_rc == found->waiting_for);
    }
    arg->victim= found;
    arg->last_locked_rc= 0;
  }
}

/**
  recursive loop detection in a wait-for graph with a limited search depth